joomla-oauth-server/com_oauthserver/administrator/src/Controller/ClientController.php

<?php

namespace Webmasterskaya\Component\OauthServer\Administrator\Controller;

use Joomla\CMS\MVC\Controller\FormController;

class ClientController extends FormController
{
    /**
     * The prefix to use with controller messages.
     *
     * @var  string
     *
     * @since  1.0.0
     */
    protected $text_prefix = 'COM_OAUTHSERVER_CLIENT';
}